Members use treadmills to warm up for an exercise class at Downsize Fitness in Addison, Texas, earlier this month. Most health clubs see a spike in membership in January.
On a New Year's mission to lose that paunch, out-of-shape resolutioners have been crowding gyms across the country since Jan. 1.
How long will they keep that up?
New Year's is Black Friday for the gym industry. According to the International Health, Racquet & Sportsclub Association, or IHRSA, more than 12 percent of new gym members join in January. ...